Back To The Future Part III Deleted Scene Tannen Kills Marshal Strickland

While listening to a fan commentary on the Back to the Future III movie, they mentioned the lack of Marshal Strickland in the third act.  When Mad Dog Tannen is arrested, it is the deputy that arrests him and not Strickland.  In a deleted scene, Mad Dog shoots Strickland in front of his son in the back.  I think it happens right before the shootout between Marty and him.  I remember this scene being in the novelization, and it stood out as being very grim.  Back in the 80s, I can see why they cut it because they wanted the movie to be more of an upbeat thing.  Having a kid watching his dad die right in front of him is really dark.  

However, I would have kept it in today.  It gives Tannen a darker tint to his character.  

Now, we need to get that Old Man Peabody deleted scene from BTTF II.